Yantarni Volcano: Difference between revisions
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| coordinates = {{coord|57|01|05|N|157|11|00|W|type:mountain_region:US}} | | coordinates = {{coord|57|01|05|N|157|11|00|W|type:mountain_region:US}} | ||
| topo = [[United States Geological Survey|USGS]] Ugashik A-4 | | topo = [[United States Geological Survey|USGS]] Ugashik A-4 | ||
| formed_by = [[Aleutian subduction zone|Subduction zone]] [[volcanism]] | |||
| type = [[Stratovolcano]] | | type = [[Stratovolcano]] | ||
| age = [[Pleistocene]] to [[Holocene]] | | age = [[Pleistocene]] to [[Holocene]] | ||
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==800 BCE ± 500 years eruption== | ==800 BCE ± 500 years eruption== | ||
The cone was breached sometime in the late [[Holocene]], between 2 and 3.5 ka, during the only Holocene event.<ref name="Alaska Volcano Observatory"/> | The cone was breached sometime in the late [[Holocene]], between 2 and 3.5 ka, during the only Holocene event.<ref name="Alaska Volcano Observatory"/> | ||
The eruption was similar to that of [[1980 eruption of Mount St. Helens|Mount St. Helens]] | The eruption was similar to that of [[1980 eruption of Mount St. Helens|Mount St. Helens]]<ref>[http://www.volcanolive.com/yantarni.html Yantarni Volcano - Volcanolive.com ]</ref> and was followed by the emplacement of 1 cu km of [[pyroclastic flow]]s related to growth of the summit [[lava dome]].<ref name="SI"/> It had a [[Volcanic Explosivity Index]] of 5.<ref>{{cite web|title=Yantarni (Eruptive History)|work=[[Global Volcanism Program]]|publisher=[[Smithsonian Institution]]|access-date=2009-06-13|url=http://www.volcano.si.edu/world/volcano.cfm?vnum=1102-10-&volpage=erupt|archive-date=2009-04-09|archive-url=https://web.archive.org/web/20090409030203/http://www.volcano.si.edu/world/volcano.cfm?vnum=1102-10-&volpage=erupt|url-status=dead}}</ref> | ||
[[Image:Map of alaska volcanoes yantarni.jpg|250px|thumb|left|Map showing volcanoes of Alaska. The mark is set at the location of Yantarni Volcano.]] | [[Image:Map of alaska volcanoes yantarni.jpg|250px|thumb|left|Map showing volcanoes of Alaska. The mark is set at the location of Yantarni Volcano.]] | ||
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==Sources== | ==Sources== | ||
* [ | * [https://pubs.usgs.gov/dds/dds-40 Volcanoes of the Alaska Peninsula and Aleutian Islands-Selected Photographs] | ||
{{Authority control}} | {{Authority control}} | ||
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[[Category:Pleistocene stratovolcanoes]] | [[Category:Pleistocene stratovolcanoes]] | ||
[[Category:Holocene stratovolcanoes]] | [[Category:Holocene stratovolcanoes]] | ||
[[Category:Quaternary Alaska]] | |||
{{LakeAndPeninsulaAK-geo-stub}} | {{LakeAndPeninsulaAK-geo-stub}} | ||
Latest revision as of 20:11, 3 November 2025
Template:Short description Template:Infobox mountain
Yantarni Volcano is an andesitic stratovolcano in the U.S. state of Alaska. It is on the Alaska Peninsula, in the Aleutian Range, between Mount Aniakchak and Mount Chiginagak volcanoes.[1] The volcano was not discovered until 1979 due to its remote location, lack of documented historic activity, and its rather modest summit elevation. The mountain was named after nearby Yantarni Bay, which in turn was named by Russian explorers after the abundance of amber (Script error: No such module "Lang"./Script error: No such module "Lang".) in the area.[2]
Geology
The current cycle of eruptive activity began in middle Pleistocene time with extrusion of andesitic lava flows, perhaps from multiple vents. By the late Pleistocene, central-vent volcanism had initiated construction of a small stratovolcano.[3]
800 BCE ± 500 years eruption
The cone was breached sometime in the late Holocene, between 2 and 3.5 ka, during the only Holocene event.[3] The eruption was similar to that of Mount St. Helens[4] and was followed by the emplacement of 1 cu km of pyroclastic flows related to growth of the summit lava dome.[1] It had a Volcanic Explosivity Index of 5.[5]
Notes
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- ↑ a b Template:Cite gvp
- ↑ Script error: No such module "citation/CS1".
- ↑ a b Script error: No such module "citation/CS1".
- ↑ Yantarni Volcano - Volcanolive.com
- ↑ Script error: No such module "citation/CS1".
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Sources
- Pages with script errors
- Pages with broken file links
- Volcanoes of Lake and Peninsula Borough, Alaska
- Mountains of Lake and Peninsula Borough, Alaska
- Stratovolcanoes of Alaska
- One-thousanders of the United States
- VEI-5 volcanoes
- Aleutian Range
- Pleistocene stratovolcanoes
- Holocene stratovolcanoes
- Quaternary Alaska